peg Pode to 2.12.1, not latest (lol), don't need labs syntax anymore master

Use nicer on-hover name 'Directory tree' for treeview syntax

Fix cache path for Prism grammars

sayings/Mizumiya: it may do well to actually say what Mizumiya *is* in its description

fixes, additions to prism's pwsh syntax highlight, tweak to markup only pushing these now (as opposed to the init commit) to better keep track of changes to these files

Use spaces instead of tabs in example compose service